A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted in the Last 31 Days

Compiled at 1950 UTC on 16 August 2018

[ The Tracking News | ephemerides | cleared ]

Notes: The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both risk monitors also post a few special objects with impact solutions beyond 100 years. For the latest official risk assessments, and for explanations of terminology and methodology, see NASA/JPL Sentry and NEODyS CLOMON2.
0000NNN000

Object

Risk
Monitor
 A/CC  Noted 
 Time & Day 
UTC
0000T0000
Year
Range

VI
#
000NN00
Prob
Cum
T0000
PS
Cum
T0000
PS
Max

T
S


Notes for Latest Risk Assessments
2018 PZ21NEODyS1950 Aug. 162045-2115428.43e-05-5.04-5.30Based on 12 optical observations (of which 0 are rejected as outliers) from 2018-08-12.369 to 2018-08-15.086.
JPL Sentry2035 Aug. 152045-2108208.358374e-05-4.99-5.200Computed at 13:18 Aug. 15th Pacific time based on 12 observations spanning 2.7172 days (2018-Aug-12.36837 to 2018-Aug-15.08559). Diameter approximately 0.015 km. from weighted mean H=26.72.
Assessment postings were noted by A/CC on 15 Aug. & 16 Aug.   -   References: MPEC 2018-P116
2018 PK21NEODyS2307 Aug. 142109-211231.94e-07-7.74-7.840Based on 22 optical observations (of which 0 are rejected as outliers) from 2018-08-11.496 to 2018-08-14.324.
JPL Sentry2020 Aug. 142100-2118186.4056147e-06-6.22-6.920Computed at 12:36 Aug. 14th Pacific time based on 22 observations spanning 2.8273 days (2018-Aug-11.4954 to 2018-Aug-14.32275). Diameter approximately 0.021 km. from weighted mean H=26.05.
Assessment postings were noted by A/CC on 14 Aug.   -   References: MPEC 2018-P104
2018 PG21NEODyS2307 Aug. 142060-2116115.02e-08-4.71-5.230Based on 13 optical observations (of which 0 are rejected as outliers) from 2018-08-08.552 to 2018-08-14.405.
JPL Sentry1910 Aug. 142086-2118197.15765e-08-4.63-5.210Computed at 11:57 Aug. 14th Pacific time based on 13 observations spanning 5.8528 days (2018-Aug-08.55164 to 2018-Aug-14.40449). Diameter approximately 0.478 km. from weighted mean H=19.26.
Assessment postings were noted by A/CC on 14 Aug.   -   References: MPEC 2018-P101
2018 PJ20NEODyS1500 Aug. 142058-209326.83e-08-8.33-8.440Based on 9 optical observations (of which 0 are rejected as outliers) from 2018-08-08.403 to 2018-08-10.491.
JPL Sentry0400 Aug. 142093-211721.5591e-07-8.05-8.180Computed at 19:28 Aug. 13th Pacific time based on 9 observations spanning 2.0883 days (2018-Aug-08.40194 to 2018-Aug-10.490243). Diameter approximately 0.013 km. from weighted mean H=27.13.
Assessment postings were noted by A/CC on 14 Aug.   -   References: MPEC 2018-P90
2018 PP10NEODyS2134 Aug. 122024-2118695.38e-09-5.37-5.57n/aBased on 15 optical observations (of which 0 are rejected as outliers) from 2018-08-08.416 to 2018-08-11.474.
An assessment posting was noted by A/CC on 12 Aug.   -   References: MPEC 2018-P61
2018 PY7NEODyS2134 Aug. 122096-2118334.66e-05-5.52-6.01n/aBased on 28 optical observations (of which 0 are rejected as outliers) from 2018-08-05.562 to 2018-08-11.466.
JPL Sentry1600 Aug. 122097-2115162.971994e-05-5.68-6.100Computed at 08:09 Aug. 12th Pacific time based on 28 observations spanning 5.9037 days (2018-Aug-05.56103 to 2018-Aug-11.464702). Diameter approximately 0.015 km. from weighted mean H=26.77.
Assessment postings were noted by A/CC on 8 Aug., 9 Aug., 10 Aug., 11 Aug. & 12 Aug.   -   References: MPEC 2018-P24 plus DOUs 2018-P32, 2018-P40, 2018-P54 & 2018-P68
2018 PR7NEODyS2134 Aug. 12209719.16e-10-11.17-11.170Based on 52 optical observations (of which 0 are rejected as outliers) from 2018-08-06.267 to 2018-08-11.387.
JPL Sentry1600 Aug. 12R E M O V E DRisk listing removed at 1506 UTC Aug. 12th
Assessment postings were noted by A/CC on 8 Aug., 9 Aug., 10 Aug., 11 Aug. & 12 Aug.   -   References: MPEC 2018-P17 plus DOUs 2018-P32, 2018-P40, 2018-P54 & 2018-P68
2018 NLJPL Sentry1600 Aug. 122060-210895.91483e-05-4.49-4.720Computed at 07:56 Aug. 12th Pacific time based on 33 observations spanning 39.157 days (2018-Jul-03.40294 to 2018-Aug-11.560068). Diameter approximately 0.029 km. from weighted mean H=25.37.
NEODyS1709 Aug. 112060-2114161.53e-04-4.04-4.060Based on 30 optical observations (of which 0 are rejected as outliers) from 2018-07-03.404 to 2018-08-10.604.
Assessment postings were noted by A/CC on 17 July, 18 July, 22 July, 24 July, 25 July, 2 Aug., 11 Aug. & 12 Aug.   -   References: DOUs 2018-O06, 2018-O36, 2018-O39, 2018-P03, 2018-P54 & 2018-P68
2018 NJNEODyS1502 July 182082-2118622.45e-03-4.27-4.28-Based on 32 optical observations (of which 1 are rejected as outliers) from 2018-07-05.276 to 2018-07-15.612.
JPL Sentry1600 July 162083-2117230.00189405923-4.35-4.360Computed at 07:01 July 16th Pacific time based on 32 observations spanning 10.336 days (2018-Jul-05.27485 to 2018-Jul-15.610845). Diameter approximately 0.009 km. from weighted mean H=27.79.
Assessment postings were noted by A/CC on 16 July & 18 July   -   References: DOU 2018-O05
2018 MC7NEODyS2134 Aug. 122060-2117884.31e-03-3.08-3.540Based on 47 optical observations (of which 1 are rejected as outliers) from 2018-06-21.395 to 2018-08-11.498.
JPL Sentry1600 Aug. 122060-2114270.00259527204-3.26-3.270Computed at 07:56 Aug. 12th Pacific time based on 45 observations spanning 51.103 days (2018-Jun-21.39443 to 2018-Aug-11.497641). Diameter approximately 0.020 km. from weighted mean H=26.16.
Assessment postings were noted by A/CC on 17 July, 18 July, 23 July, 24 July, 25 July, 8 Aug. & 12 Aug.   -   References: DOUs 2018-O06, 2018-O37, 2018-O39, 2018-P25 & 2018-P68
2018 MC5NEODyS2134 Aug. 122112-211721.23e-07-7.57-7.640Based on 52 optical observations (of which 0 are rejected as outliers) from 2018-06-12.476 to 2018-08-11.615.
JPL Sentry1600 July 16R E M O V E DRisk listing removed at 1401 UTC July 16th
Assessment postings were noted by A/CC on 16 July, 18 July & 12 Aug.   -   References: DOUs 2018-O05 & 2018-P68
2014 HG196JPL Sentry1800 Aug. 132019-21173319.763522e-07-6.45-7.440Computed at 21:29 April 8th of 2017 Pacific time based on 18 observations spanning 1.0300 days (2014-Apr-23.08628 to 2014-Apr-24.11626). Diameter approximately 0.016 km. from weighted mean H=26.56.
An assessment posting was noted by A/CC on 13 Aug.   -   References: no recent MPECs
C   L   E   A   R   E   D
2018 PG9NEODyS2134 Aug. 12R E M O V E D
JPL Sentry1600 Aug. 12R E M O V E DRisk listing removed at 1516 UTC Aug. 12th
Assessment postings were noted by A/CC on 10 Aug. & 12 Aug.   -   References: MPEC 2018-P42 plus DOUs 2018-P68 & 2018-P97
2018 PD9NEODyS1900 Aug. 15R E M O V E D
Assessment postings were noted by A/CC on 12 Aug. & 15 Aug.   -   References: MPEC 2018-P39 plus DOUs 2018-P68 & 2018-P108
2018 PF8JPL Sentry2104 Aug. 14R E M O V E DRisk listing removed at 2055 UTC Aug. 14th
NEODyS1600 Aug. 14R E M O V E D
Assessment postings were noted by A/CC on 8 Aug., 9 Aug., 10 Aug., 12 Aug. & 14 Aug.   -   References: MPEC 2018-P31 plus DOUs 2018-P40, 2018-P68 & 2018-P97
2018 OMNEODyS1930 July 23R E M O V E D
JPL Sentry1818 July 22R E M O V E DRisk listing removed at 1415 UTC July 22nd
Assessment postings were noted by A/CC on 19 July, 20 July, 22 July & 23 July   -   References: MPEC 2018-O27 plus DOUs 2018-O28, 2018-O29, 2018-O36 & 2018-O37
2018 LANEODyS1427 July 25R E M O V E D
An assessment posting was noted by A/CC on 25 July   -   References: DOU 2018-O23
2018 JG1NEODyS2134 Aug. 12R E M O V E D
Assessment postings were noted by A/CC on 22 July & 12 Aug.   -   References: DOUs 2018-O36 & 2018-P68
2017 OM1NEODyS2207 July 29R E M O V E D
JPL Sentry1300 July 28R E M O V E DRisk listing removed at 0137 UTC July 28th
Assessment postings were noted by A/CC on 19 July, 28 July & 29 July   -   References: MPEC 2018-O48

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale (next 100 years)

For a list of risk-rated objects currently under observation, see our ephemerides page.

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" for more information.


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